Produced by SJ, HBF FACTORY Audemars Piguet A A42 Royal Oak Offshore Series 26238: The Pinnacle Masterpiece. Designed to eliminate the risk of counterfeit appearances, HBF has devoted itself to research and development based on the original JF factory design, breaking barriers and overcoming the original lockdown technology. The exclusive chronograph model features a movable chronograph pusher that allows for maximum wrist fit, greatly enhancing wearing comfort while also preventing the awkwardness of obvious fakes.HBF truly considers the perspective of every watch enthusiast.1. Utilizing the latest CNC-level polishing technology, every angle of the watch case is perfectly processed.2. Each hexagon screw is aligned with the plane of the watch frame, with no tolerance for any protrusions or indentations, truly exemplifying the art of top-level replication.3. The dial features Audemars Piguet's classic large check pattern as a background, with a distinctly layered grid arrangement, showcasing the craftsmanship to perfection.4. The mirror is made of double-sided sapphire crystal, complemented by natural fluororubber.5. The movement utilizes the original 3126 chronograph caliber, featuring a small seconds at the 12 o'clock position, with 12-hour and 30-minute chronograph functions at the 6 o'clock and 9 o'clock positions, perfectly replicating all functions of the original version. Each watch undergoes manual quality control to ensure movement stability, making it truly impeccable.S1 exquisitely recommends this multifunctional mechanical wristwatch for men.